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Tower Research Capital LLC (TRC)
> MACK
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | MERRIMACK PHARMACEUTICALS INC | MACK | 10,567 | 9,332 | 129,974,000 | 129,959,000 | $12,299.99 |
| 03/31/2023 | MERRIMACK PHARMACEUTICALS INC | MACK | 1,235 | 1,050 | 15,000 | 14,000 | $12.15 |
| 09/30/2022 | MERRIMACK PHARMACEUTICALS INC | MACK | 185 | 185 | 1,000 | 1,000 | $5.41 |
| 06/30/2022 | MERRIMACK PHARMACEUTICALS INC | MACK | 0 | -193 | 0 | -1,000 | |
| 03/31/2022 | MERRIMACK PHARMACEUTICALS INC | MACK | 193 | -435 | 1,000 | -1,000 | $5.18 |
| 12/31/2021 | MERRIMACK PHARMACEUTICALS INC | MACK | 628 | 628 | 2,000 | 2,000 | $3.18 |
| 06/30/2021 | MERRIMACK PHARMACEUTICALS INC | MACK | 0 | -1,948 | 0 | -13,000 | |
| 12/31/2020 | MERRIMACK PHARMACEUTICALS INC | MACK | 1,948 | 1,449 | 13,000 | 11,000 | $6.67 |
| 09/30/2020 | MERRIMACK PHARMACEUTICALS INC | MACK | 499 | 499 | 2,000 | 2,000 | $4.01 |
| 06/30/2020 | MERRIMACK PHARMACEUTICALS INC | MACK | 0 | -773 | 0 | -2,000 | |
| 03/31/2020 | MERRIMACK PHARMACEUTICALS INC | MACK | 773 | -1,760 | 2,000 | -6,000 | $2.59 |
| 12/31/2019 | MERRIMACK PHARMACEUTICALS INC | MACK | 2,533 | -309 | 8,000 | -5,000 | $3.16 |
| 09/30/2019 | MERRIMACK PHARMACEUTICALS INC | MACK | 2,842 | -455 | 13,000 | -7,000 | $4.57 |
| 06/30/2019 | MERRIMACK PHARMACEUTICALS INC | MACK | 3,297 | 2,454 | 20,000 | 14,000 | $6.07 |
| 03/31/2019 | MERRIMACK PHARMACEUTICALS INC | MACK | 843 | -18,220 | 6,000 | -67,000 | $7.12 |
| 12/31/2018 | MERRIMACK PHARMACEUTICALS INC | MACK | 19,063 | 3,035 | 73,000 | -13,000 | $3.83 |
| 09/30/2018 | MERRIMACK PHARMACEUTICALS INC | MACK | 16,028 | 8,813 | 86,000 | 50,000 | $5.37 |
| 06/30/2018 | MERRIMACK PHARMACEUTICALS INC | MACK | 7,215 | 5,442 | 36,000 | 22,000 | $4.99 |
| 03/31/2018 | MERRIMACK PHARMACEUTICALS INC | MACK | 1,773 | 1,773 | 14,000 | 14,000 | $7.90 |
| 12/31/2017 | MERRIMACK PHARMACEUTICALS INC | MACK | 0 | -3,453 | 0 | -50,000 | |
| 09/30/2017 | MERRIMACK PHARMACEUTICALS INC | MACK | 3,453 | 3,453 | 50,000 | 50,000 | $14.48 |
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